(19)
(11) EP 3 817 009 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.05.2021 Bulletin 2021/21

(43) Date of publication A2:
05.05.2021 Bulletin 2021/18

(21) Application number: 20203642.2

(22) Date of filing: 23.10.2020
(51) International Patent Classification (IPC): 
H01B 7/295(2006.01)
G02B 6/44(2006.01)
 H01B 13/24(2006.01)
H01B 11/22(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 29.10.2019 CN 201911039723

(71) Applicant: Hengtong Optic-Electric Co., Ltd
Suzhou, Jiangsu 215234 (CN)

(72) Inventors:
  • WANG, Tingting
    Suzhou, Jiangsu Province 215234 (CN)
  • GAO, Feng
    Suzhou, Jiangsu Province 215234 (CN)
  • ZHANG, Yu
    Suzhou, Jiangsu Province 215234 (CN)
  • SHEN, Chenxi
    Suzhou, Jiangsu Province 215234 (CN)
  • ZHANG, Wenmei
    Suzhou, Jiangsu Province 215234 (CN)

(74) Representative: Noréns Patentbyrå AB 
Box 10198
100 55 Stockholm
100 55 Stockholm (SE)

   


(54) PHOTOELECTRIC COMPOSITE CABLE FOR AN INDOOR WIRELESS DISTRIBUTION SYSTEM AND PREPARATION METHOD THEREOF


(57) The invention provides a photoelectric composite cable for an indoor wireless distribution system, comprising two power wires (1), four groups of wire pairs (2), an optical unit (3), and a framework (4), which are arranged in a cable cavity of the cable. The framework (4) is provided with seven radial side bulges (41) separating the cable cavity into seven framework cavities (6), in which the two power wires (1), the four groups of wire pairs (2) and the optical unit (3) are arranged respectively to form an integral structure. The integral structure on a periphery thereof is coated with a polyester belt (6), and the polyester belt (6) on a periphery thereof is coated with an outer sheath (7). The optical unit (3) comprises a flame-retardant sheath (8) and an aramid fiber reinforcing ring piece (9) respectively with a circular-ring-shaped cross section and sequentially arranged from outside to inside, and an optical fiber (10) arranged in an inner cavity of the aramid fiber reinforcing ring piece (9).







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